I'm not concerned with all the scares I use 2% thoriated on steel. I like the way it performs and will continue to use it. I use 2% lanthanated on aluminium holds a taper better. However I'm curious as to what advantages the 4% has, might be useful. Ever used a piece of tungsten and after awile you...

This guy came up with a nice piece.

https://www.youtube.com/watch?v=hqbxYVWgtyA

exnailpounder, cast a third "K" and add it to the picture, and you're sure to make new friends in the Chicago area... :lol: :lol: :lol: Steve S That concealed carry may come in handy if he does that :lol: The south must be rubbing into you or something. I'm no racist, nor a "south's ...

The pink alumina cups can be cleaned up in a bead blaster. Use a file or coarse cloth tape to remove any stuck spatter first.

String wire through them or they will get blown through the one hole in the mesh blaster floor....................

Yes, but with regulated pressure, dropped down, to avoid component damage.

Chinese are true spartans and minimalists when it comes to electronics, they put maximum minimum into stuff they export cheap. This is why their stuff dies often as it does not have durability reserve. When I studied electronics, and we had to design microchip logic schemes, our tutor told us, that...

This is from the follow on video from Jeff's Tube Notching link. https://www.youtube.com/watch?v=EH2dAVmpPdo https://www.amazon.com/AHP-AlphaTIG-Stick-Welder-WARRANTY/dp/B00REX6USW The Chinese at least seem to understand that a user friendly welder has knobs for adjustment, not accessing a ******* m...

I had an instance where I was plugging some holes in an aluminum rad tank with some 1.2 x 18mm diam discs into the hole from a 20mm tube, which had been hit with a 90 deg counter sink to locate the disc. Using a #6 cup with a gas lens was a PITA, always burning the disc back, and this was being don...

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I had an instance where I was plugging some holes in an aluminum rad tank with some 1.2 x 18mm diam discs into the hole from a 20mm tube, which had been hit with a 90 deg counter sink to locate the disc. Using a #6 cup with a gas lens was a PITA, always burning the disc back, and this was being done...

Certainly..I've been meaning to check electrode density on my lab scale and see how close to the known density of pure W they are..of course this would be comparing same types of differing brands. This all started when one of my sons expressed interest in having a solid lump of tungsten and he foun...

What I've learned is snapping can induce fractures that pop the electrode at the worst time.. Like on 100% RT welds. Tungsten electrodes are made from tungsten powder that has been sintered into rod that has nearly the density of elemental tungsten. While it seems a solid, it behaves more like a ce...

Use a .040" cut off wheel in a die grinder.

No risk of the tungsten developing splits, at least not from cutting.............

Try using AC. It works more like oxy-acetylene brazing / silver soldering, as the HF cleaning action acts like a flux and allows the bronze to flow. Start with the AC balance where you use it for aluminum.

You'll find it's far easier to keep the base metal below its melting point.

Like I said, I'm sure within the recommended range, it's fine, but 2%La has held up better when exceeding it. Zircononiated tungsten held up better on the Syncrowave at 310 than any of them actually, but that was a fellow welders personal stash. The company supplies La/Th/Pure for us to use. Sent f...

Like I said, I'm sure within the recommended range, it's fine, but 2%La has held up better when exceeding it. Zircononiated tungsten held up better on the Syncrowave at 310 than any of them actually, but that was a fellow welders personal stash. The company supplies La/Th/Pure for us to use. Sent f...

With an interference fit on the OD, go for a bearing with a C 3 tolerance.

Even if you use a slip fit inner/outer, the C 3 will give better life.

There's two types of zirconiated tungstens , brown (up to 0.4% Zr) and white (up to 0.8% Zr) https://www.millerwelds.com/resources/article-library/selecting-the-right-tungsten-a-critical-issue-to-get-the-full-benefits-of-ac-tig-inverter-welding If the white you have works, holds a stable ball, doesn...

Edit. Just saw Steve's post.

Another option.

http://www.serto.com/chen/technical-information/

Sounds interesting! I am wondering if somewhere in the process a Rust Converter product might feasible? I have used it occasionally on rusty areas hard to get at and clean -body seams etc. Prep is minimal. If you search it there are several formulations for different applications. Good luck. :? htt...

exnailpounder wrote:.......... shrouds out of. Being a pack rat pays off sometimes. This was a fun project.

Truer words were never spoken !

This Pomgolian site mentions that the EU-SSR has banned it but it's still available. http://www.hse.gov.uk/pubns/eis31.pdf Evidently the cad reduces the working temperature required. Here's an outfit that still make them. http://www.sbagroup.com.au/amal/sba-products/silver-solder-rods-wires-rings/ h...

If you have a choice of silver solders and fluxes, go for the ones that contains cadmium. That is, if they haven't been banned by the 'elf an safety nazis............

They seem to be far less critical to high temperatures and the flux forming a black scale on the parts, plus they flow better.

The AC cleans the surface ( like the flux when brazing with O /A) Experiment with AC on some scrap AB or steel to see the effect. Re the welder, what type of tungsten are you using, and what do you have on hand ? Are the points in good condition and gapped correctly ? https://www.manualslib.com/manu...

Are the plugs flush with the block surfaces? If they are below , break the hole edges slightly.

Try using AC and the pedal only, no pulse, and use the filler wire as per normal welding. 15-20CFH flow rate.